What do you want to hear though - sorry but yes you are an older mum - it doesn't make any difference that lots of mums are older and geriatric. Just because the average age is 34 doesn't mean you are a young mum - your not
Yes it is more difficult having a first baby over 35 and it doesn't matter the reason that this has happened , thats just that.
There is nothing wrong with being whatever age but it is going to have a medical term to go with it.